Behavior differences

The Durable Objects Worker / class API matches Cloudflare. Every object lives on the single local workerd.

Compatibility

Topic	Cloudflare	open-compute
Worker / class API	Durable Objects API	Same: namespace idFromName / newUniqueId / idFromString / get / getByName, stub fetch / RPC, state.storage KV and SQL, transactions, output gate
Placement	Geographic scheduling, locationHint / jurisdiction / migration	All objects on one local workerd; locationHint / jurisdiction / migration have no geo effect
Alarms	Available	7 methods supported
Hibernation	Available	Supported
Binding	wrangler durable_objects	{ type, id, className }; className required
Fetcher.connect()	General outbound	Declared capability tunnel

See Compatibility.